An interesting LED from Cree slipped below my radar earlier this year. It is a ‘far red’ version of its XP-E emitter – with peak emission around 730nm – very deep red. A few years ago Electronics Weekly had an interesting conversation with Dr John O’Hagan of the UK Health Protection Agency. We contacted him about LED eye safety – ...
Cree has got in touch to send some closer photos of the new light guides it is using in its own-brand LN (office) and IG (garage) luminaires. Electronics Weekly has requested more information on what makes the technology unique. …
‘ready2mains’ is an over-mains dimming scheme from driver maker Tridonic. So – sophisticated dimming can be added despite no modifications to existing wiring. Its TalexxConverter Premium driver have it built in – the 100W one, for example, can dim from 1-100% using ready2mains This unit consumes 150mW standby power – not bad, but could do better Tridonic. Data is passed ...
For Museums and retail, Ledil’s 700 Olivia-S is designed to produce beams with typical FWHM of 15-20°, subject to the LES size (up to 19mm). ‘S’ is for spot, and it will soon be joined by some wide beam versions. Fresnel/folding optics keeps height below 23mm. The lens system is designed to work with Zhaga compliant solderless connectors from a range of manufacturers.
Lumileds has pushed up the power of its 6.5mm diameter emission CoB leds, aiming them at PAR, GU10 and MR16 lamps. Called ‘109’ CoBs, they are part of the firm’s 12x15mm Compact CoB family, this time specified at 250mA (35.5V nominal 1.5°C/W). Others 12x15mm 6.5mm leds are the ‘105’ range (150mA 36V nominal, 2.7°C/W) and ‘107’ range (200mA 35.5V 1.5°C/W). “This line ...
A single die led that can deliver over 100,000cd running at 10W from a 50mm diameter optic has been announced by Cree. It is a lens-less version of its 3.45 x 3.45mm XP-L – with lens-less designs generally trading a little efficacy for intensity. Efficacy is 185 lm/W at much lower power (1W). Binning and characterisation are at 1.05A at 85°C. Devices are ...
Cree has announced a light guide technology branded ‘WaveMax’. And that is about all that has been said. It has ‘DiamondFacet’ optical elements, achieves “up to 90 percent optical efficiency” and is used in the firm’s LN (office) and IG (garage) luminaires. No you know as much as anyone. A bit brand-heavy and fact-light, I feel. The firm is another ...
Luminus want a slice of retail lighting with its XH series CoBs. Right now I am struggling to find much more information. What I have is on the Electronics Weekly news site. If you are at Lightfair, I suspect Luminus will tell you all you need to know.
It is not often you hear of a new packaging concept for LEDs. Three days ago Litecool of Sheffield got patents for an adhesive-backed one – that can be pick-and-placed straight onto a heatsink. Carclo 10mm lenses can be places straight on top. Not only that, but it makes its own electrical connections – so no pcb or mcpcb is ...
If optic diameter is important, forming letter-box beams is such a struggle, that the likes of Lumileds, Cree and Osram should make some nice rectangular die. Only my opinion of course, fuelled by my attempts to make anti-dazzle bicycle lights, but I am sure designers of wall-washers and other fan-beam luminaires would soon make used of them. Osram and Lumileds ...
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